If the bringer of the sacrifice is not affected, who then is being purified? The telling clue is the destination of the blood of the sacrifice. It is not smeared on the offerer; it is smeared, rather, on the altar. The act is described by the word kippur, “purge” (as in Yom Kippur: the Day of Purgation). In commanding that the blood be daubed on the horns of the altar, the text is indicating that the altar is contaminated and must be purified. Since the offerer must bring the sacrifice, the offerer